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A large-scale experimental study on the thermal failure propagation behaviors of primary lithium batteries

机译：原发性锂电池热失效传播行为的大规模试验研究

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摘要

In order to investigate the thermal failure propagation behaviors of lithium batteries, a sequence of full-scale burning tests were conducted. The results showed that the average mass loss and total heat release of an in-dividual cell are 5.8 g and 31.9 kJ, respectively. The battery pack fire exhibited intermittent propagation behaviors due to the heat interaction between the cells. An obvious domino phenomenon with a chain-like increase in temperature rise and propagation speed could be observed during the thermal failure propagation process. The temperature of the cell surface is about 700 similar to 1000 degrees C during the combustion process. Several cells burned simultaneously and exacerbated the burning rate, resulting in the larger mass loss rate and the heat release rate for the larger battery pack. The average mass loss rate is 0.69 g/s for 6 x 6 cells and 1.0 g/s for 10x10 cells, respectively. Moreover, the increasing combustion efficiency appeared in the larger battery pack. The effective heat is 2.0 kJ/g for single cell, 3.2 kJ/g for 6 x 6 cells, and 3.9 kJ/g for 10x10 cells. This study can provide a theoretical reference for the fire safety design of large lithium battery energy storage equipment.
机译：为了研究锂电池的热失效传播行为，进行了一系列全刻度的燃烧试验。结果表明，分离细胞的平均质量损失和总热释放分别为5.8g和31.9 kJ。由于细胞之间的热相互作用，电池组火表现出间歇传播行为。在热故障传播过程中，可以观察到具有链状的升温和传播速度的链状的明显多米诺现象。在燃烧过程中，细胞表面的温度约为700℃。几个细胞同时燃烧并加剧燃烧速率，导致较大的电池组的质量损失率和热释放速率。平均质量损失率为6×6细胞为0.69g / s，分别为10×10个细胞1.0g / s。此外，较大的电池组中出现了燃烧效率的增加。单晶的有效热量为2.0 kJ / g，3.2kJ / g为6×6细胞，3.9kJ / g，10×10细胞。本研究可以为大型锂电池储能设备的消防安全设计提供理论参考。

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  • 来源
    《Journal of Energy Storage》 |2020年第10期|101657.1-101657.10|共10页
  • 作者

    Chen Mingyi; Liu Jiahao; Ouyang Dongxu; Weng Jingwen; Wu Xiangyang; Cao Shuchao; Wang Jian;

  • 作者单位

    Jiangsu Univ Sch Environm & Safety Engn Zhenjiang 212013 Jiangsu Peoples R China;

    Shanghai Maritime Univ Coll Ocean Sci & Engn Shanghai 201306 Peoples R China;

    Univ Sci & Technol China State Key Lab Fire Sci Hefei 230026 Anhui Peoples R China;

    Univ Sci & Technol China State Key Lab Fire Sci Hefei 230026 Anhui Peoples R China;

    Jiangsu Univ Sch Environm & Safety Engn Zhenjiang 212013 Jiangsu Peoples R China;

    Jiangsu Univ Sch Automot & Traff Engn Zhenjiang 212013 Jiangsu Peoples R China;

    Univ Sci & Technol China State Key Lab Fire Sci Hefei 230026 Anhui Peoples R China;

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  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    Primary lithium battery; Thermal failure propagation; Fire safety; Effective heat;

    机译：主要锂电池;热失效传播;防火安全;有效的热量;

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